Defensive publication



i g H M h l ygg fi DEFENSIVE PUBLICATIO UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 0.G. 1221. Iden tification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Otfice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JUNE 24., 1969 8(33 O.Gr. 999

717,468 POLYOLEFIN COMPOSITIONS Gordon Clay Newland and Gerald Ray Lappin, both of PD. Box 511, Kingsport, Tenn. 37662, and John Ware Tamblyn, P.O. Box 92, Jonas Ridge, N.C. 28641 Continuation-impart of application Ser. No. 323,139,

Nov. 23, 1963. This application Mar. 29, 1968. Published June 24, 1969 Int. Cl. C08f 27/22, 45/00 US. "Cl. 260-94.9 No Drawing. 7 Pages Specification Chelates such as nickel II/dodecyl benzoylacetate, nickel H/decyl acetoacetate, nickel II/ethyl benzoylacetate, nickel II/oleyl acetoacetate, manganese II/dodecyl acetoacetate, cobalt II/dodecyl acetoacetate, and zinc II/ dodecyl acetoacetate promote the controlled oxidation of polymeric materials, particularly polyolefins containing from 1 to 8 carbon atoms, and make it possible :to closely regulate the rate and degree of oxidation. The metal chelates are employed in catalytic amounts generally on the order of less than 5 percent and effectively catalyze the photooxidation and oxidation of the polymeric materials. The metal chelates provide catalytic versatility for the preparation of waxes and other applications such as agricultural mulching films. The polymeric materials include not only homopolymers but also copolymers obtained from the polymerization of at least two diflFerent polymers. 

